Installation with vibrating slide carriage for the manufacture of concrete slabs

ABSTRACT

An installation for the manufacture of finished parts and plates from concrete in which a substantially flat and horizontal form channel is supported on longitudinal guide rails located inwardly from the lateral edges of the form channel at a distance of about one-fifth the width thereof, while the slide carriage producing the vibrations which is displaceable in the longitudinal direction of the form channel engages at the longitudinal bearers.

United States Patent Inventors Armin Kleiber Mozartstr. S; Wilfried Schmidt, Rennbergstr. 4, both of 75 Karlsruhe, Germany Appl. No. 815,684 Filed Apr. 14, 1969 Patented June 8, 1971 Priority Apr. 13, 1968 Germany K60 940 INSTALLATION WITH VIBRATING SLIDE CARRIAGE FOR THE MANUFACTURE OF CONCRETE SLABS 14 Claims, 1 Drawing Fig.

US. Cl. 259/72, 25/4 lJ Int. Cl B28b l/08 Field of Search 25/] F, 4!

[56] References Cited UNITED STATES PATENTS l,387,l75 8/l92l Price 25/4] FOREIGN PATENTS 843,675 7/1952 Germany 259/DIG. 42 l,l76,04l 8/l964 Germany 264/7l Primary Examiner-Robert D. Baldwin AuorneyCraig, Antonelli, Stewart & Hill ABSTRACT: An installation for the manufacture of finished parts and plates from concrete in which a substantially flat and horizontal form channel is supported on longitudinal guide rails located inwardly from the lateral edges of the form channel at a distance of about one-fifth the width thereof, while the slide carriage producing the vibrations which is displaceable in the longitudinal direction of the form channel engages at the longitudinal bearers.

PATENTED JUN 8 19m INVENTORS ARMIN KLEIBER and WILFRIED SCHMIDT ATTORNEYS INSTALLATION WITH VIBRATING SLIDE CARRIAGE FOR THE MANUFACTURE OF CONCRETE SLABS The present invention relates to an installation for the manufacture of concrete finished parts and plate slabs with a flat and horizontal form track or form channel supported on vibrating metal rails, which is provided on its bottom side with longitudinal bearers arranged parallelly to its longitudinal axis and resting on the vibrating metal rails, and with a vibratory slide carriage displaceably arranged in the longitudinal direction below the form channel.

The installation according to the present invention finds application for the manufacture of finished parts from concrete as are used in residential and industrial constructions. The form track or channel of the installation serves as form base surface on which are mounted in a conventional manner the necessary lateral form walls. After the insertion of the reinforcing elements, the forms are filled with concrete whereby the condensing of the filled-in concrete takes place by a vibrating slide carriage adapted to be displaced by an electric motor. The vibrating slide carriage engages at the form track or channel and sets the same into vertical vibrations of small amplitude; in order to make this possible, the form track or channel is supported on vibrating metal rails.

Such types of production tracks or channels are known per se and consist essentially of a long and narrow form track or channel reinforced by cross bearers. The cross bearers are thereby placed on longitudinal bearers which support the manufacturing track or channel along its longitudinal edges. The longitudinal bearers rest on vibratory metal elements. Two further profile irons disposed closely adjacent one another are arranged between the outwardly disposed longitudinal bearers below the form track in proximity and parallel to the longitudinal axis thereof; the two further profile irons are secured at the cross bearers. The vibrating slide carriage is displaceably arranged between these profile irons so that depending on requirement it can be moved below the respective concrete zone or zone to be filled with concrete. With these manufacturing tracks or channels, the form track or channel is, as viewed in cross section, supported at the outer edges thereof by means of the vibrating metal rails, and the excitation of the concrete zone takes place by the vibrating slide carriage in two points located near the center of the form track.

As long as the center of gravity ofthe sidewalls ofthe forms, of the reinforcing elements and of the filled-in concrete lies on the longitudinal axis of the longitudinally symmetrically constructed form track or channel, no difficulties occur in general while vibrating as well as compacting or condensing the filledin concrete. If however, for any reason-be it for the rational utilization of the available form surface or because the finished parts have a symmetrical cross sections (such as, for example, angle plates, supports, etc.)-the form track or course is loaded asymmetrically, then the problem occurs that not only during the condensing of the filled-in concrete an un desirable material transport takes place toward that side of the form track or course, in the direction of which the center of gravity of the finished part has been displaced, but also an uneven condensing of the concrete of the structural element to be made takes place. By reason of the material transport, transversely to the form track or channel there exists with thin, plate-shaped structural parts the danger the manufacture of parts with nonuniform thickness; and the unequal condensing involves the risk that the finished structural elements do not possess the necessary strength. These disadvantages occurring with the prior art manufacturing tracks or channels reside in the position and location of the support and excitation points of the form track which becomes unfavorable for asymmetrical loads.

The main object ofthe present invention resides in eliminating the aforementioned disadvantages of the known manufacturing tracks. It has been discovered that this is attainable by a suitable change of the location both of the support points as well as of the engaging points for the excitation of the form track. The present invention solves the underlying problems in that the longitudinal bearers are arranged at a distance from the longitudinal edges of the form track corresponding to at least one-fifth of the width of the form track, and in that the vibrating slide carriage engages directly at the longitudinal bearers. With the location of the support-and excitation points of the form track proposed in accordance with the present inventionwhereby the support places and location of the excitation coincide according to the present invention-an approximately equally large amplitude of the excitation is produced over the entire cross section also with an eccentric load of the form track so that a disadvantageous material transport toward the side and a nonuniform condensing of the concrete is avoided. As a result of the support displaced in the direction toward the center of the production form track, one obtains as further advantages a considerable saving in material by the elimination of two separate longitudinal rails for the vibrating slide carriage and a reduction in cost of the reinforcing construction of the form track by reason of lower overloads and overstressing.

In one advantageous type of construction of the present invention, the vibrating slide carriage is provided at both sides with two jawlike endpieces resting on the inner surface of the lower flange of the longitudinal bearers consisting of wideand parallel-flanged double-T-irons. The width of the gap between the bottom side of the upper flange and the upper edge ofthe endpiece is so selected that the remaining air gap is smaller than the amplitude produced by the external vibrators in the vibrating slide carriage so that a completely satisfactory transmission of vertical vibrations to the form track takes place. The use of double-T-irons with wide and parallel flanges precludes (in contrast to the ordinary double-T or U- steel members with inclined inner-flange top-surfaces) a wedging or jamming of the slide carriage at the longitudinal bearers.

in a preferred construction of the proposed installation according to the present invention the form track or channel consists of form tables arranged one behind the other in the longitudinal direction and pivotal upwardly about a pivot axis extending parallelly to the longitudinal axis. The form tables constructed so as to pivot nearly up to the vertical position permit the manufacture of concrete plates which have to be removed standing vertically. The upward pivoting is realized by means ofa crane engaging at a longitudinal edge.

Another feature of the present improvement resides in horizontal overload traverses or crossbeams displaceable above the form track in the longitudinal direction thereof and carrying rotating spindles while upright struts or posts are arranged at the ends of the traverses which includes base portions resting on the form track and skidlike guides surrounding the longitudinal edges of the form track. The overload crossbeams or traverses serve in conjunction with the rotating spindles for clamping-on the side forms of the form track or channel. For the purpose of stripping the forms and lifting the finished parts as well as for the cleaning of the form surface, the overload traverses can be displaced out of the operating area.

For the purpose of facilitating the displacement of the overload cross beams, the foot portions of the struts carry pairs of rollers running one behind the other. Advantageously, the rollers consist of an elastic synthetic resinous material of any known type. The use ofa synthetic resinous material dispenses with a lubrication of the roller bearings; a sufficiently elastic synthetic resinous material effects a self-cleaning of the running surfaces of the rollers from concrete during displacement of the cross beams or traverses.

The spanning traverses or cross beams may be formed of two U-shaped irons with the backs thereof disposed opposite one another, and the rotating spindles are displaceable between the U-shaped irons and on pairs of guide rails located above and below the U-shaped irons. Each traverse carries several rotating spindles which can be displaced in the transverse direction to the form track corresponding to the necessary position of the side forms. The construction of the overstress cross beams or traverses from two U-shaped irons and the use of the guide rails at the rotating spindles permits a simple cleaning of these parts.

These and other objects, features, and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawing which shows, for purposes of illustration only, one embodiment in accordance with the present invention, and wherein:

The single FIGURE is a front elevational view of one embodiment of an installation for the production of finished parts made from concrete in accordance with the present invention.

Referring now to the single figure of the drawing, reference numeral 1 designates two vibrating metal rails which are secured on a subframe illustrated only schematically and essentially of U-shaped construction in cross section. Upwardly directed support arms 2 extend from one side ofthe subframe. A flat and horizontal form track or form channel 3 rests on the vibrating metal rails 1 which consists of individual form tables 4 and 4' of any suitable number arranged one behind the other in the longitudinal direction and pivotal in the upward direction.

The surface of each form table 4 and 4 is formed by a thin form layer 5 made from steel, wood or synthetic resinous material reinforced with glass fibers, which rests on cross bearers 6 having a double-T profile. Lateral edge angles at the projecting form.layer 5 form the longitudinal edges 7 of the form track. Longitudinal bearers 8 are secured to the bottom side of the form tables 4 and 4' which rest on the upper surface of the vibrating metal rails 1.

The longitudinal bearers 8 consist of double-T-irons with wide and parallel flanges; the distance of each longitudinal bearer 8 from the longitudinal edge 7 of the form track 3 amounts to about one-fifth ofthe width of the form track 3. A vibrating slide carriage 9 is arranged between the longitudinal bearers 8 which is displaceable in the longitudinal direction of the form track 33 The vibrating slide carriage 9 which is of conventional construction can be pulled into the desired concrete zone by the use of an electric motor (not shown) having an adjustable rotational speed and by means ofa cable 10.

The vibrating slide carriage 9 is constructed of tublike shape. Two external vibrators 11 of the electric or selectively of the compressed-air type of any known, conventional construction which operate in the same direction, are disposed on the inside of the slide carriage 9. Two jawlike endpieces 12 and 13 are provided on the vibrating slide carriage 9 at the two sides facing the longitudinal bearers 8, by means of which the vibrating slide carriage 9 rests on the inner surface of the lower flange 14 of the longitudinal bearer 8.

Pivot bolts 15 disposed in the pivot axis of the form tables 4 and 4' are located at the ends of the support arms 2. These pivot bolts 15 extend through vertically disposed elongated apertures 16 that are located in the cross bearers 6. With horizontally disposed form tables 4 and 4', the joint bolts 15 are located approximately in the center ofthe elongated apertures 16 so that the vibrations produced by the external vibrators 11 and transmitted to the form tables 4 and 4' by way of the endpieces 12 and 13 cannot be further transmitted to the subframe.

In the drawing, a form table 4' is illustrated in the pivotedup position. The pivoting is carried out by means of a crane engaging at the longitudinal side opposite the support arms 2. For the retention ofthe form table 41 and 4' serves a drop hook 17 mounted at the respective support arm which in the pivoted-up position engages in a retaining element 18 provided at the cross bearer 6 below the longitudinal edge 7.

U-shaped spanning traverses or cross beams 19 intended to absorb overloads are disposed above the form track 3 which are displaceable in the longitudinal direction thereof. A crossbeam or traverse 19 consists of two parallel U-shaped irons 20 disposed back to back opposite one another; at the ends of the cross beams 19 are disposed vertically downwardly extending struts or braces 21 which include at the inner side thereof U- shaped base portions, in which are arranged a pair of rollers 23 consisting of elastic synthetic resinous material of any known appropriate type. The rollers 23 run along the top side of the longitudinal edges 7. Below the lateral rim angles the struts 21 are providedopposite the rollers 23with skidlike guide portions 24 which surround the longitudinal edges 7 of the form track from below.

The cross beams or traverses l9 carry rotatable spindles 25 displaceable. over the entire length thereof. These rotatable spindles 25 are arranged between the U-shaped iron sections 20 of the overload crossbeams or traverses 19 and are provided laterally with a pair of guide rails 26 each which are disposed above and below the U-shaped irons 20 parallel thereto. Each rotating spindle 25 includes a foot portion 27 as well as a handcrank 28.

The present invention proposes a production track or channel adapted to be manufactured in a price-favorable manner, by means of which can be produced concrete finished parts that are condensed homogeneously and have uniform thickness. By the use of overload crossbeams reinforced with rotating spindles and adapted to be displaced, side forms can be clamped onto the form and the time for assembling the forms can be shortened. The subdivision ofthe form track into several individual form tables adapted to be pivoted up, enables the manufacture of concrete plates which can be removed vertically.

While we have shown and described only one embodiment in accordance with the present invention, it is understood that the same is not limited thereto but is susceptible of numerous changes and modifications as known to a person skilled in the art, and we therefore do not wish to be limited to the details shown and described herein but intend to cover all such changes and modifications as are within the scope of those skilled in the art.

We claim:

ll. An installation for the manufacture of finished parts and plate slabs from concrete which includes substantially flat and horizontal form track means supported on vibrating metal rail means, longitudinal bearer means arranged at the bottom side of the form track means and extending parallelly to the longitudinal axis thereof which rest on the vibrating metal rail means, and vibrating slide carriage means displaceably arranged in the longitudinal direction below the form track means, characterized in that the longitudinal bearer means are arranged at a distance from the longitudinal edges of the form track means corresponding to at least about one-fifth of the width of the form track means, and in that the vibrating slide carriage means engages at the longitudinal bearer means.

2. An installation according to claim 1, characterized in that said carriage means includes end portions on both sides thereof which rest on the inner surfaces of the lower longitudinal bearer means consisting of double-T-iron profiles with relatively wide and substantially parallel flanges.

3. An installation according to claim 2, characterized in that the form track means consists of a plurality of form tables arranged one behind theother in the longitudinal direction and adapted to be pivoted up about a pivot axis parallel to the longitudinal direction.

4. An installation according to claim 3, characterized in that substantially horizontal cross beam means are arranged above the form track means, said crossbeam means being displaceable in the longitudinal direction and carrying rotating spindle means, and strut means at the ends of the crossbeam means including foot portions resting on the form track means and guide portions surrounding the longitudinal edges of the form track means.

5. An installation according to claim 4, characterized in that the foot portions carry pairs of rollers.

6. An installation according to claim 5, characterized in that the rollers consist of an elastic synthetic resinous material.

7. An installation according to claim 6, wherein the crossbeam means are formed of two U-shaped section members disposed opposite one another with the backs thereof, the rotating spindle means being displaceable between the U shaped section members on pairs of guide rails disposed above and below the U-shaped section members.

8. An installation according to claim 1, characterized in that the form track means consists of a plurality of form tables arranged one behind the other in the longitudinal direction and adapted to be pivoted up about a pivot axis parallel to the longitudinal section.

9. An installation according to claim 1, characterized in that substantially horizontal crossbeam means are arranged above the form track means, said crossbeam means being displaceable in the longitudinal direction and carrying rotating spindle means, and strut means at the ends of the crossbeam means including foot portions resting on the form track means and guide portions surrounding the longitudinal edges of the form track means.

10. An installation according to claim 9, characterized in that the foot portions carry pairs of rollers.

11. An installation according to claim 10, characterized in that the rollers consist of an elastic synthetic resinous material.

12. An installation according to claim 10, wherein the crossbeam means are formed of two U-shaped section members disposed opposite one another with the backs thereof, the rotating spindle means being displaceable between the U- shaped section members onpairs of guide rails disposed above and below the U-shaped section members.

13. An installation according to claim 12, characterized in that the form track means consists of a plurality of form tables arranged one behind the other in the longitudinal direction and adapted to be pivoted up about a pivot axis parallel to the longitudinal direction.

14. An installation according to claim 9, wherein the crossbeam means are formed of two U-shaped section members disposed opposite one another with the backs thereof, the rotating spindle means being displaceable between the U- shaped section members on pairs of guide rails disposed above and below the U-shaped section members. 

1. An installation for the manufacture of finished parts and plate slabs from concrete which includes substantially flat and horizontal form track means supported on vibrating metal rail means, longitudInal bearer means arranged at the bottom side of the form track means and extending parallelly to the longitudinal axis thereof which rest on the vibrating metal rail means, and vibrating slide carriage means displaceably arranged in the longitudinal direction below the form track means, characterized in that the longitudinal bearer means are arranged at a distance from the longitudinal edges of the form track means corresponding to at least about one-fifth of the width of the form track means, and in that the vibrating slide carriage means engages at the longitudinal bearer means.
 2. An installation according to claim 1, characterized in that said carriage means includes end portions on both sides thereof which rest on the inner surfaces of the lower longitudinal bearer means consisting of double-T-iron profiles with relatively wide and substantially parallel flanges.
 3. An installation according to claim 2, characterized in that the form track means consists of a plurality of form tables arranged one behind the other in the longitudinal direction and adapted to be pivoted up about a pivot axis parallel to the longitudinal direction.
 4. An installation according to claim 3, characterized in that substantially horizontal cross beam means are arranged above the form track means, said crossbeam means being displaceable in the longitudinal direction and carrying rotating spindle means, and strut means at the ends of the crossbeam means including foot portions resting on the form track means and guide portions surrounding the longitudinal edges of the form track means.
 5. An installation according to claim 4, characterized in that the foot portions carry pairs of rollers.
 6. An installation according to claim 5, characterized in that the rollers consist of an elastic synthetic resinous material.
 7. An installation according to claim 6, wherein the crossbeam means are formed of two U-shaped section members disposed opposite one another with the backs thereof, the rotating spindle means being displaceable between the U-shaped section members on pairs of guide rails disposed above and below the U-shaped section members.
 8. An installation according to claim 1, characterized in that the form track means consists of a plurality of form tables arranged one behind the other in the longitudinal direction and adapted to be pivoted up about a pivot axis parallel to the longitudinal section.
 9. An installation according to claim 1, characterized in that substantially horizontal crossbeam means are arranged above the form track means, said crossbeam means being displaceable in the longitudinal direction and carrying rotating spindle means, and strut means at the ends of the crossbeam means including foot portions resting on the form track means and guide portions surrounding the longitudinal edges of the form track means.
 10. An installation according to claim 9, characterized in that the foot portions carry pairs of rollers.
 11. An installation according to claim 10, characterized in that the rollers consist of an elastic synthetic resinous material.
 12. An installation according to claim 10, wherein the crossbeam means are formed of two U-shaped section members disposed opposite one another with the backs thereof, the rotating spindle means being displaceable between the U-shaped section members on pairs of guide rails disposed above and below the U-shaped section members.
 13. An installation according to claim 12, characterized in that the form track means consists of a plurality of form tables arranged one behind the other in the longitudinal direction and adapted to be pivoted up about a pivot axis parallel to the longitudinal direction.
 14. An installation according to claim 9, wherein the crossbeam means are formed of two U-shaped section members disposed opposite one another with the backs thereof, the rotating spindle means being displaceable between the U-shaped section members on pairs of guide rails disposed above and beloW the U-shaped section members. 